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#ifndef _AD1889_H_

#define _AD1889_H_

#define AD_DSWSMC       0x00    /* DMA input wave/syn mixer control */

#define AD_DSRAMC       0x02    /* DMA output resamp/ADC mixer control */

#define AD_DSWADA       0x04    /* DMA input wave attenuation */

#define AD_DSSYDA       0x06    /* DMA input syn attentuation */

#define AD_DSWAS        0x08    /* wave input sample rate */

#define AD_DSRES        0x0a    /* resampler output sample rate */

#define AD_DSCCS        0x0c    /* chip control/status */

#define AD_DMARESBA     0x40    /* RES base addr */

#define AD_DMARESCA     0x44    /* RES current addr */

#define AD_DMARESBC     0x48    /* RES base cnt */

#define AD_DMARESCC     0x4c    /* RES current count */

#define AD_DMAADCBA     0x50    /* ADC */

#define AD_DMAADCCA     0x54

#define AD_DMAADCBC     0x58

#define AD_DMAADCCC     0x5c

#define AD_DMASYNBA     0x60    /* SYN */

#define AD_DMASYNCA     0x64

#define AD_DMASYNBC     0x68

#define AD_DMASYNCC     0x6c

#define AD_DMAWAVBA     0x70    /* WAV */

#define AD_DMAWAVCA     0x74

#define AD_DMAWAVBC     0x78

#define AD_DMAWAVCC     0x7c

#define AD_DMARESICC    0x80    /* RES interrupt current count */

#define AD_DMARESIBC    0x84    /* RES interrupt base count */

#define AD_DMAADCICC    0x88    /* ADC interrupt current count */

#define AD_DMAADCIBC    0x8c    /* ADC interrupt base count */

#define AD_DMASYNICC    0x90    /* SYN interrupt current count */

#define AD_DMASYNIBC    0x94    /* SYN interrupt base count */

#define AD_DMAWAVICC    0x98    /* WAV interrupt current count */

#define AD_DMAWAVIBC    0x9c    /* WAV interrupt base count */

#define AD_DMARESCTRL   0xa0    /* RES PCI control/status */

#define AD_DMAADCCTRL   0xa8    /* RES PCI control/status */

#define AD_DMASYNCTRL   0xb0    /* RES PCI control/status */

#define AD_DMAWAVCTRL   0xb8    /* RES PCI control/status */

#define AD_DMADISR      0xc0    /* PCI DMA intr status */

#define AD_DMACHSS      0xc4    /* PCI DMA channel stop status */

#define AD_GPIOIPC      0xc8    /* IO port ctrl */

#define AD_GPIOOP       0xca    /* IO output status */

#define AD_GPIOIP       0xcc    /* IO input status */

/* AC97 registers, 0x100 - 0x17f; see ac97.h */

#define AD_ACIC         0x180   /* AC Link interface ctrl */

/* OPL3; BAR1 */

#define AD_OPLM0AS      0x00    /* Music0 address/status */

#define AD_OPLM0DATA    0x01    /* Music0 data */

#define AD_OPLM1A       0x02    /* Music1 address */

#define AD_OPLM1DATA    0x03    /* Music1 data */

/* 0x04-0x0f reserved */

/* MIDI; BAR2 */

#define AD_MIDA         0x00    /* MIDI data */

#define AD_MISC         0x01    /* MIDI status/cmd */

/* 0x02-0xff reserved */

#define AD_DSIOMEMSIZE  512

#define AD_OPLMEMSIZE   16

#define AD_MIDIMEMSIZE  16

#define AD_WAV_STATE    0

#define AD_ADC_STATE    1

#define AD_MAX_STATES   2

#define DMA_SIZE        (128*1024)

#define DMA_FLAG_MAPPED 1

struct ad1889_dev;

typedef struct ad1889_state {

        struct ad1889_dev *card;

        mode_t open_mode;

        struct dmabuf {

                unsigned int rate;

                unsigned char fmt, enable;

                /* buf management */

                size_t rawbuf_size;

                void *rawbuf;

                dma_addr_t dma_handle;  /* mapped address */

                unsigned long dma_len;  /* number of bytes mapped */

                /* indexes into rawbuf for setting up DMA engine */

                volatile unsigned long rd_ptr, wr_ptr;

                wait_queue_head_t wait; /* to wait for buf servicing */

                /* OSS bits */

                unsigned int mapped:1;

                unsigned int ready:1;

                unsigned int ossfragshift;

                int ossmaxfrags;

                unsigned int subdivision;

        } dmabuf;

        struct semaphore sem;

} ad1889_state_t;

typedef struct ad1889_dev {

        unsigned long regbase;

        struct pci_dev *pci;

        spinlock_t lock;

        int dev_audio;

        /* states; one per channel; right now only WAV and ADC */

        struct ad1889_state state[AD_MAX_STATES];

        /* AC97 codec */

        struct ac97_codec *ac97_codec;

        u16 ac97_features;

        /* debugging stuff */

        struct stats {

                unsigned int wav_intrs, adc_intrs;

                unsigned int blocks, underrun, error;

        } stats;

} ad1889_dev_t;

typedef struct ad1889_reg {

        const char *name;

        int offset;

        int width;

} ad1889_reg_t;

#endif